Joan Amari is a sales executive for Umai Frozen Yogurt, a chain of frozen yogurt
stores. Joan is responsible for overseeing 20 franchises in California. Joan wants to compare average
customers per day at the franchises over the past three years and determine whether factors such as
location, date, and weather play a significant role in the volume of customer traffic. She has data that
contains over 21,000 records from the daily sales in the 20 stores from the past three years.